# -*- coding: UTF-8 -*-
#判断是否是闰年
year = int(input("请输入年份："))
if (year % 4) == 0 and (year % 100) != 0 or (year % 400) == 0:
	print('{}是闰年'.format(year))
else:
	print('{}不是闰年'.format(year))
pass